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Candida colonization

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https://www.readbyqxmd.com/read/28730378/enzymatic-activity-of-candida-spp-from-oral-cavity-and-urine-in-children-with-nephrotic-syndrome
#1
Dorota Olczak-Kowalczyk, Maria Roszkowska-Blaim, Maria Dąbkowska, Ewa Swoboda-Kopeć, Dariusz Gozdowski, Małgorzata Mizerska-Wasiak, Urszula Demkow, Małgorzata Pańczyk-Tomaszewska
Oral colonization with Candida spp. is not synonymous with a systemic active infection. The aim of the study was to evaluate enzymatic activity of Candida strains isolated from the oral cavity in patients with nephrotic syndrome (NS) and to compare it with the activity determined in urine. We studied 32 children with NS and 26 control healthy children. Children with NS were treated with glucocorticosteroids, cyclosporin A, mycophenolate mofetil or azathioprine. In all children, API-ZYM enzymatic tests were performed to evaluate hydrolytic enzymes of Candida isolated from the oral cavity and in urine...
July 21, 2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28730269/emergence-of-candida-glabrata-in-vulvovaginal-candidiasis-should-be-attributed-to-selective-pressure-or-virulence-ability
#2
Sandra Sayuri Nakamura-Vasconcelos, Adriana Fiorini, Pamela Delvas Zanni, Patrícia de Souza Bonfim-Mendonça, Janine Ribeiro Godoy, Adriana Araújo Almeida-Apolonio, Marcia Edilaine Lopes Consolaro, Terezinha Inez Estivalet Svidzinski
PURPOSE: Vulvovaginal candidiasis (VVC) is one of the most frequent female genital disorders and Candida glabrata is the second most common agent. Current study was aimed to study the susceptibility to antifungal agents of C. glabrata isolated from vaginal samples and some virulence attributes in order to better understand why this species is emerging as the main VVC agents. METHODS: A total of 60 C. glabrata vaginal isolates were included in this study. Firstly they were screened by susceptibility tests to antifungal agents...
July 20, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/28716440/removal-notice-to-617-candida-colonization-is-associated-with-improved-survival-after-lung-transplant-j-heart-lung-transplant-36-2017-s238
#3
J S Green, R Brown, T Umeda, K Rudser, S Elde, J M Roberts, M I Hertz, G Loor, J H Young, R Tomic
No abstract text is available yet for this article.
August 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28713826/characterization-of-oral-microbiota-in-removable-dental-prosthesis-users-influence-of-arterial-hypertension
#4
Leila Maria Marchi-Alves, Dayana Freitas, Denise de Andrade, Simone de Godoy, Adrielle Naiara Toneti, Isabel Amélia Costa Mendes
INTRODUCTION: Studies have described the possible relation between oral infections and atherosclerotic events. OBJECTIVE: To characterize the oral microbiota of normotensive and hypertensive users of dental prostheses. METHODS: The sample consisted of 41 complete dental prosthesis users, divided into groups: 21 participants with systemic arterial hypertension and 20 normotensive participants. The data collection included the characteristics of the sociodemographic variables and the determination of the microbial load in the saliva...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28713338/investigation-of-och1-in-the-virulence-of-candida-parapsilosis-using-a-new-neonatal-mouse-model
#5
Katalin Csonka, Máté Vadovics, Annamária Marton, Csaba Vágvölgyi, Erik Zajta, Adél Tóth, Renáta Tóth, Csaba Vizler, László Tiszlavicz, Héctor M Mora-Montes, Attila Gácser
Candida parapsilosis is an opportunistic human fungal pathogen that poses a serious threat to low birth weight neonates, particularly at intensive care units. In premature infants, the distinct immune responses to Candida infections are not well understood. Although several in vivo models exist to study systemic candidiasis, only a few are available to investigate dissemination in newborns. In addition, the majority of related studies apply intraperitoneal infection rather than intravenous inoculation of murine infants that may be less efficient when studying systemic invasion...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28712126/evidence-of-an-abnormal-epithelial-barrier-in-active-untreated-and-corticosteroid-treated-eosinophilic-esophagitis
#6
Dagmar Simon, Basile Page, Monique Vogel, Christian Bussmann, Carine Blanchard, Alex Straumann, Hans-Uwe Simon
BACKGROUND: Eosinophilic esophagitis (EoE) is a chronic, immune/antigen-mediated disease characterized by symptoms related to esophageal dysfunction and an eosinophil-predominant inflammation. This study has aimed to investigate whether the recently observed sensitization to Candida albicans in EoE patients is owing to pre-existing disease and its underlying abnormal epithelial barrier or, alternatively, is linked to corticosteroid (CS) therapy. METHODS: Medical histories, as well as serum and tissue samples of 60 EoE patients (15 CS-naive, 45 with current or previous CS therapy) and 20 controls, stored in the Swiss Eosinophilic Esophagitis Database (SEED) and Biobank, were analyzed...
July 16, 2017: Allergy
https://www.readbyqxmd.com/read/28685162/in-vivo-indicators-of-cytoplasmic-vacuolar-and-extracellular-ph-using-phluorin2-in-candida-albicans
#7
Hélène Tournu, Arturo Luna-Tapia, Brian M Peters, Glen E Palmer
Environmental or chemically induced stresses often trigger physiological responses that regulate intracellular pH. As such, the capacity to detect pH changes in real time and within live cells is of fundamental importance to essentially all aspects of biology. In this respect, pHluorin, a pH-sensitive variant of green fluorescent protein, has provided an invaluable tool to detect such responses. Here, we report the adaptation of pHluorin2 (PHL2), a substantially brighter variant of pHluorin, for use with the human fungal pathogen Candida albicans...
July 2017: MSphere
https://www.readbyqxmd.com/read/28681023/characterization-and-identification-of-candiduria-due-to-candida-species-in-diabetic-patients
#8
M Falahati, S Farahyar, L Akhlaghi, Sh Mahmoudi, K Sabzian, M Yarahmadi, R Aslani
BACKGROUND AND PURPOSE: The presence of Candida yeasts in urine, known as candiduria, is an indicator of infection or colonization of the urinary tract by Candida species. This condition in diabetic patients can be hazardous due to diminished immune system response. The objective of this study was to investigate the incidence of candiduria in diabetic patients and to identify its causative agents. Furthermore, the demographic and laboratory (HbA1c, urine glucose and pH, urine culture colony count, and fasting blood sugar) data and their possible associations with candiduria were investigated...
September 2016: Advances in Medical Mycology (Iran)
https://www.readbyqxmd.com/read/28680771/candida-pararugosa-first-reported-bloodstream-infection-in-an-adult
#9
Guy El Helou, Elizabeth Palavecino
Candida pararugosa is a yeast that has been previously isolated in various human specimens. The first reported isolation was from human feces in 1998, with subsequent reports of positive cultures from the oral cavity where it was thought to represent colonization rather than true infection. Though it has been isolated from other human sites, its clinical significance and manifestations are poorly characterized. We report the case of a 39-year-old woman on parenteral hyperalimentation who developed post abdominal surgery sepsis and surgical wound necrotizing fasciitis...
May 29, 2017: Curēus
https://www.readbyqxmd.com/read/28678309/fenticonazole-an-effective-topical-treatment-for-superficial-mycoses-as-the-first-step-of-antifungal-stewardship-program
#10
F Tumietto, L Giacomelli
The resistance of microorganisms to antimicrobial drugs is a major issue for public health, with important consequences in terms of morbidity, mortality and resource use. The phenomenon is so serious that in some areas of the world resistant strains to all available drugs have been selected. Many conditions may result in the development of resistance: they include the indiscriminate or inappropriate (e.g., for viral infection or colonization) use of antibiotics, the excessive duration of the prescribed treatment regimens, as well as inadequate dosing or administration routes...
June 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28659321/performance-of-a-quantitative-pcr-based-assay-and-beta-d-glucan-detection-for-the-diagnosis-of-invasive-candidiasis-in-very-low-birth-weight-preterm-neonatal-patients-candineo-study
#11
Jose Tomas Ramos, Sonia Villar, Emilio Bouza, Elena Bergon-Sendin, Alfredo Perez Rivilla, Caridad Tapia Collados, Mariano Andreu, Candelaria Santana Reyes, María Isolina Campos-Herrero, Jon López de Heredia, María Cruz López Herrera, Paloma Anguita Alonso, Carmen Rosa Pallás-Alonso, Manuel Cuenca-Estrella
An epidemiological, multicenter, non-interventional, observational case-control study was conducted to describe the performance of serum Beta-D-Glucan (BDG) and Candida polymerase chain reaction (PCR) in blood, serum and sterile samples for the diagnosis of invasive candidiasis (IC) in very low birth weight (VLBW) preterm neonates, and to compare these techniques with cultures from blood and other sterile sites. Seventeen centers participated in the study and the number of episodes analyzed was 159. A total of nine episodes of IC from nine patients (seven confirmed and two probable) and 150 episodes of suspected sepsis from 117 controls were identified...
June 28, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28659179/coping-with-living-in-the-soil-the-genome-of-the-parthenogenetic-springtail-folsomia-candida
#12
Anna Faddeeva-Vakhrusheva, Ken Kraaijeveld, Martijn F L Derks, Seyed Yahya Anvar, Valeria Agamennone, Wouter Suring, Andries A Kampfraath, Jacintha Ellers, Giang Le Ngoc, Cornelis A M van Gestel, Janine Mariën, Sandra Smit, Nico M van Straalen, Dick Roelofs
BACKGROUND: Folsomia candida is a model in soil biology, belonging to the family of Isotomidae, subclass Collembola. It reproduces parthenogenetically in the presence of Wolbachia, and exhibits remarkable physiological adaptations to stress. To better understand these features and adaptations to life in the soil, we studied its genome in the context of its parthenogenetic lifestyle. RESULTS: We applied Pacific Bioscience sequencing and assembly to generate a reference genome for F...
June 28, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28657681/negative-regulation-of-filamentous-growth-in-candida-albicans-by-dig1p
#13
Hannah Regan, Christine Scaduto, Matthew P Hirakawa, Kearney Gunsalus, Tuana Oliveira Correia-Mesquita, Yuan Sun, Yaolin Chen, Carol A Kumamoto, Richard Bennett, Malcolm Whiteway
Transcriptional regulation involves both positive and negative regulatory elements. The Dig1 negative regulators are part of a fungal-specific module that includes a transcription factor (a Ste12 family member) and a Dig1 family member. In S. cerevisiae the post-genome-duplication Dig1/Dig2 proteins regulate MAP kinase controlled signaling pathways involved in mating and filamentous growth. We have identified the single Dig1 ortholog in the fungal pathogen Candida albicans. Genetic studies and transcriptional profiling experiments show that this single protein is implicated in regulation of MAP kinase-controlled processes involved in mating, filamentous growth and biofilm formation, and also influences cAMP-regulated processes...
June 28, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28655563/pathogenic-characteristics-of-candida-albicans-isolated-from-oral-cavities-of-denture-wearers-and-cancer-patients-wearing-oral-prostheses
#14
J V Mothibe, M Patel
Candida albicans cause opportunistic infections including oral candidiasis in immunocompromised patients. It has an ability to cause infection due to its virulence factors. This study investigated the pathogenic characteristics of C. albicans isolated from the oral cavities of healthy subjects and two vulnerable groups, denture wearers and cancer patients wearing oral prostheses. Oral rinse samples were collected and cultured for the quantitative and qualitative analysis of Candida. Twenty strains of C. albicans isolated from the healthy individuals and denture wearers and, 14 strains isolated from the cancer patients were selected and their pathogenic characteristics were measured...
June 24, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28655067/fatal-ulcerative-enteritis-of-the-small-intestine-in-a-patient-with-ulcerative-colitis-treated-with-vedolizumab
#15
Carmen Monasterio, Annette Schmitt-Gräff, Matthias Pohl, Thomas Truschel, Klaus Warnatz, Wolfgang Kreisel, Robert Thimme, Peter Hasselblatt
Vedolizumab (VDZ) inhibits α4β7 integrins and is used to target intestinal immune responses in patients with inflammatory bowel disease, which is considered to be relatively safe. Here we report on a fatal complication following VDZ administration. A 64-year-old female patient with ulcerative colitis (UC) refractory to tumor necrosis factor inhibitors was treated with VDZ. One week after the second VDZ infusion, she was admitted to hospital with severe diarrhea and systemic inflammatory response syndrome (SIRS)...
June 27, 2017: Zeitschrift Für Gastroenterologie
https://www.readbyqxmd.com/read/28641915/the-antimicrobial-spectrum-of-xeroform-%C3%A2
#16
David J Barillo, Anthony R Barillo, Sarah Korn, Kan Lam, Paul S Attar
INTRODUCTION/BACKGROUND: Xeroform(®) is a petrolatum-based fine mesh gauze containing 3% bismuth tribromophenate. Bismuth, similar to other metals, has antimicrobial properties. Xeroform(®) has been used for decades in burn and plastic surgery as a donor site dressing and as a covering for wounds or partial thickness burns. Despite this, the antimicrobial spectrum of Xeroform(®) remains largely unknown. We examined the in-vitro efficacy of Xeroform(®) against common burn pathogens using zone-of-inhibition methodology in a commercial research facility...
June 19, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28609183/farnesol-signalling-in-candida-albicans-more-than-just-communication
#17
Melanie Polke, Ines Leonhardt, Oliver Kurzai, Ilse D Jacobsen
Candida albicans is a successful colonizer of the human host, which can, under certain circumstances cause a range of clinically diverse infections. Important virulence-associated traits of the fungus, such as the dimorphic switch and biofilm formation, are controlled by the quorum sensing molecule farnesol. Given the potential of farnesol as a novel antifungal drug, there has been increasing research into the mechanism underlying farnesol sensing and action in C. albicans. However, despite the identification of various factors involved in farnesol signalling, its exact mode of action remains largely unclear...
June 13, 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28591257/oral-candida-spp-carriage-and-periodontal-diseases-in-hiv-infected-patients-in-ribeir%C3%A3-o-preto-brazil
#18
Alan Grupioni Lourenço, Ana Elisa Rodrigues Alves Ribeiro, Cristiano Nakao, Ana Carolina Fragoso Motta, Luana Grupioni Lourenço Antonio, Alcyone Artioli Machado, Marilena Chinali Komesu
The majority of HIV-infected patients develop Candida spp-associated clinical oral lesions. Studies have shown that asymptomatic oral colonization of Candida spp may lead to oral lesions or become a source of disseminated infections. The aim of this study was to verify the effects of periodontal conditions on Candida spp prevalence and Candida spp carriage in the oral cavity of HIV-infected patients compared to non-infected patients. Twenty-five patients not infected with HIV and 48 HIV-infected patients were classified according to periodontal conditions as being periodontal healthy or with periodontal disease...
June 1, 2017: Revista do Instituto de Medicina Tropical de São Paulo
https://www.readbyqxmd.com/read/28590443/interaction-of-candida-species-with-the-skin
#19
REVIEW
Andreas Kühbacher, Anke Burger-Kentischer, Steffen Rupp
The human skin is commonly colonized by diverse fungal species. Some Candida species, especially C. albicans, do not only reside on the skin surface as commensals, but also cause infections by growing into the colonized tissue. However, defense mechanisms at the skin barrier level are very efficient, involving residential non-immune and immune cells as well as immune cells specifically recruited to the site of infection. Therefore, the skin is an effective barrier against fungal infection. While most studies about commensal and pathogenic interaction of Candida species with host epithelia focus on the interaction with mucosal surfaces such as the vaginal and gastrointestinal epithelia, less is known about the mechanisms underlying Candida interaction with the skin...
June 7, 2017: Microorganisms
https://www.readbyqxmd.com/read/28588252/candida-albicans-sap6-amyloid-regions-function-in-cellular-aggregation-and-zinc-binding-and-contribute-to-zinc-acquisition
#20
Rohitashw Kumar, Christine Breindel, Darpan Saraswat, Paul J Cullen, Mira Edgerton
Candida albicans is an opportunistic fungal pathogen colonizing the oral cavity. C. albicans secreted aspartic protease Sap6 is important for virulence during oral candidiasis since it degrades host tissues to release nutrients and essential transition metals. We found that zinc specifically increased C. albicans autoaggregation induced by Sap6; and that Sap6 itself bound zinc ions. In silico analysis of Sap6 predicted four amyloidogenic regions that were synthesized as peptides (P1-P4). All peptides, as well as full length Sap6, demonstrated amyloid properties, and addition of zinc further increased amyloid formation...
June 6, 2017: Scientific Reports
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